If you cannot connect, then you may have a newer controller trying to pair with an older stick.. I have found that the Nvida Shield Game Pad is compatible with the Fire Tv Sticks/Boxes. Try and find a used one for around $20 on Offerup, Ebay, or Letgo.
I suggest that you not replace the hard drive. Instead add a 2 TB external drive. For reasons as follows: 1 - Your Xbox will run faster. The external port can run an SATA III while the internal is only an SATA. Plus you could go all the way with an SSD if you wanted. Though honestly that's over kill and would only slightly help. 2 - Once you move your everything to your External Drive, you can plug it into any Xbox your logged into and play your games, use your apps, and basically use the Xbox as though it were yours. 3 - You could keep two, one as a back up in case your system dies.
Please be more specific. What message do you get, if any, when attempting to download an app? Is it downloading but not installing? Have you set your download and install storage settings to your external SD?
Okay, first, is the freezer working, but not the fridge? If so, the vent is clogged. Air flows through a vent in between the fridge and freezer. Two things to do would be to defrost the system by turning it off. After it is fully defrosted, clean it, open the vent and clean it, check for anything that could block air flow. Plug it back in and feel for air flow, especially between then fridge and freezer. Also, listen to hear the compressor kick off. If you do not hear it go off, then you may need a kickstarter. It's like a giant capacitor you attach to the fridge's compressor to get it to turn over. You can order one online or buy one at a fridge parts replacement store.
Four actually: (1) Download GBoard app, (2) Jailbreak phone, (3) Dump the iPhone like a rude ex and buy a Samsung S8, or (4) Just use the remote that came with your Stick. I'd choose #1 but #3 is a great option!
LOL. My suggestion is to just buy a refurbished Fire Stick. The motherboards are made in China and that will be hard to swing since it's an exclusive item. That and that a refurbished stick or used stick is cheaper than the board would be.
Go to your TV settings and turn on the HDMI port. Also older models may not be HDCP compliant, like the Element TV (circa 2010?). In that case you'll need an HDMI splitter like View HD VHD-1x2MN3D. It will strip the HDCP copyright coding from the stream allowing it to show on that TV.